This lecture introduces the course on semiconductors and nanostructures, outlining the structure, objectives, and evaluation methods. The instructor discusses the importance of semiconductors in modern technology, including their applications in electronics and photonics. The course will cover fundamental concepts such as band structures, charge carriers, and doping, while also emphasizing the significance of nanostructures. The instructor highlights the hybrid teaching format, combining in-person and online classes, and encourages student interaction through various class formats, including lectures, exercises, and debates. The lecture also touches on the historical context of semiconductor research, mentioning key milestones and figures in the field. The instructor emphasizes the importance of teamwork and curiosity in learning, setting the stage for a collaborative educational experience. Students are informed about the course schedule, assignments, and the use of Moodle for course materials and communication. Overall, the lecture serves as a comprehensive introduction to the course and its relevance in the field of material science.